103 lines
4.2 KiB
C++
103 lines
4.2 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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/*!
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\file
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\brief Defines conversion operations among Fragments of different base type.
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*/
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#pragma once
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#include "cutlass/fragment.h"
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namespace cutlass {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename InputFragment_, typename OutputFragment_>
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struct Convert {};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename InputScalar_, typename OutputScalar_, int kScalars_>
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struct Convert<Fragment<InputScalar_, kScalars_>, Fragment<OutputScalar_, kScalars_> > {
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/// The input fragment.
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typedef Fragment<InputScalar_, kScalars_> InputFragment;
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/// The output fragment.
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typedef Fragment<OutputScalar_, kScalars_> OutputFragment;
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/// Ctor.
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CUTLASS_DEVICE Convert() {}
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/// Transform a fragment.
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CUTLASS_DEVICE void transform(InputFragment const& src, OutputFragment& dst) {
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transform(src, 0, dst);
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}
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/// Transform a fragment.
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template <typename Fragment_>
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CUTLASS_DEVICE void transform(Fragment_ const& src, int offset, OutputFragment& dst) {
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for (int i = 0; i < kScalars_; ++i) {
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dst[i] = static_cast<OutputScalar_>(src[i + offset]);
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}
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Fragment_>
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struct Copy {
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/// The input fragment.
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typedef Fragment_ InputFragment;
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/// The output fragment.
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typedef Fragment_ OutputFragment;
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/// Ctor.
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CUTLASS_DEVICE Copy() {}
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/// Transform a fragment.
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CUTLASS_DEVICE void transform(Fragment_ const& src, Fragment_& dst) { transform(src, 0, dst); }
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/// Transform a fragment.
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template <typename InputFragment_>
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CUTLASS_DEVICE void transform(InputFragment_ const& src, int offset, Fragment_& dst) {
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if (sizeof(typename Fragment_::Element) == 8) {
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uint64_t const* src_ptr = reinterpret_cast<uint64_t const*>(&src[offset]);
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uint64_t* dst_ptr = reinterpret_cast<uint64_t*>(&dst[0]);
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for (int i = 0; i < sizeof(Fragment_) / 8; ++i) {
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dst_ptr[i] = src_ptr[i];
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}
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} else {
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uint32_t const* src_ptr = reinterpret_cast<uint32_t const*>(&src[offset]);
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uint32_t* dst_ptr = reinterpret_cast<uint32_t*>(&dst[0]);
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for (int i = 0; i < sizeof(Fragment_) / 4; ++i) {
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dst_ptr[i] = src_ptr[i];
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}
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}
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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} // namespace cutlass
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